Heparin Drip Practice Calculation Problems (Quiz)

Heparin drip practice calculation problems for nurses.

These Heparin drip practice problems were designed to help you better understand how to titrate a Heparin drip based on aPTT. You will be required to solve problems that require you to understand: unit/kg/hr, unit/hr, and mL/hr.

After you take this quiz, be sure to check out our other dosage and calculation quizzes with video teaching tutorials that go along with each quiz.

Before taking the quiz, don’t forget to watch the free lecture on how to solve heparin drip calculations.

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Heparin Drip Practice Calculation Problems

1.       The MD orders your patient to start an IV Heparin drip at 18 units/kg/hr and to administer a loading bolus dose of 30 units/kg IV before initiation of the drip. You’re supplied with a Heparin bag that reads 25,000 units/500 mL. The patient weighs 172 lbs. What is the flow rate you will set the IV pump at (mL/hr) and the amount of units for the IV bolus?

A.      1,569 units; 36.9 mL/hr

B.      2,346 units; 28.1 mL/hr

C.      2,587 units; 19.8 mL/hr

D.      4,236 units; 39.3 mL/hr

The answer is B: 2,346 units; 28.1 mL/hr

2.       The MD orders your patient to start an IV Heparin drip at 16 units/kg/hr and to administer a loading bolus dose of 60 units/kg IV before initiation of the drip. You’re supplied with a Heparin bag that reads 12,500 units/250 mL. The patient weighs 198 lbs. What is the flow rate you will set the IV pump at (mL/hr)?

A.      69.6 mL/hr

B.      12.5 mL/hr

C.      43.6 mL/hr

D.      28.8 mL/hr

The answer is D: 28.8 mL/hr

3.       Your patient has a Heparin drip running at 36 mL/hr. The Heparin bag reads 12,500 units/250 mL. How many units per hour is the patient receiving?

A.      1,200 units/hr

B.      850 units/hr

C.      1,800 units/hr

D.      1,650 units/hr

The answer is C: 1,800 units/hr

4.       Your patient has a Heparin drip running at 29 mL/hr. The Heparin bag reads 10,000 units/ 100 mL. How many units per hour is the patient receiving?

A.      2,900 units/hr

B.      1,590 units/hr

C.      3,352 units/hr

D.      1,980 units/hr

The answer is A: 2,900 units/hr

5.       Your patient’s recent PTT is 45. According to protocol, you need to increase the Heparin drip by 2 units/kg/hr and administer 30 units/kg IV bolus. You will recheck the PTT in 6 hours. The patient is currently receiving a Heparin drip at 22 units/kg/hr from a bag that reads 25,000 units/250 mL. The patient weighs 129 lbs. How many units will the patient receive as a bolus, and how many units per kilogram per hour will the patient receive based on the new PTT result?

A.      1,289 units; 24 units/kg/hr

B.      2,500 units; 22 units/kg/hr

C.      1,758 units; 24 units/kg/hr

D.      1,857 units; 24 units/kg/hr

The answer is C: 1,758 units; 24 units/kg/hr

6.       You increase your patient’s Heparin drip to 24 units/kg/hr. The Heparin bag reads 25,000 units/ 250 mL. What is the new flow rate (mL/hr)? The patient weights 129 lbs.

A.      15.2 mL/hr

B.      14.1 mL/hr

C.      18.9 mL/hr

D.      23.6 mL/hr

The answer is B: 14.1 mL/hr
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